I was curious how to do the math for the following problem, which I am sure will help me with similar questions in the future.
I want to know:
At what number of hands will 1% of players with a theoretical (-1BB/100) and a standard deviation of 30BB/100 still be winning?

I know similar questions have been covered in the past, but I need more of a walk through on how to solve this.
Thank you, and Good luck.